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<h1><a href="classroom_v1.html">Google Classroom API</a> . <a href="classroom_v1.courses.html">courses</a> . <a href="classroom_v1.courses.posts.html">posts</a></h1>
<h2>Instance Methods</h2>
<p class="toc_element">
  <code><a href="classroom_v1.courses.posts.addOnAttachments.html">addOnAttachments()</a></code>
</p>
<p class="firstline">Returns the addOnAttachments Resource.</p>

<p class="toc_element">
  <code><a href="#close">close()</a></code></p>
<p class="firstline">Close httplib2 connections.</p>
<p class="toc_element">
  <code><a href="#getAddOnContext">getAddOnContext(courseId, postId, addOnToken=None, attachmentId=None, itemId=None, x__xgafv=None)</a></code></p>
<p class="firstline">Gets metadata for Classroom add-ons in the context of a specific post. To maintain the integrity of its own data and permissions model, an add-on should call this to validate query parameters and the requesting user's role whenever the add-on is opened in an [iframe](https://developers.google.com/workspace/classroom/add-ons/get-started/iframes/iframes-overview). This method returns the following error codes: * `PERMISSION_DENIED` for access errors. * `INVALID_ARGUMENT` if the request is malformed. * `NOT_FOUND` if one of the identified resources does not exist.</p>
<h3>Method Details</h3>
<div class="method">
    <code class="details" id="close">close()</code>
  <pre>Close httplib2 connections.</pre>
</div>

<div class="method">
    <code class="details" id="getAddOnContext">getAddOnContext(courseId, postId, addOnToken=None, attachmentId=None, itemId=None, x__xgafv=None)</code>
  <pre>Gets metadata for Classroom add-ons in the context of a specific post. To maintain the integrity of its own data and permissions model, an add-on should call this to validate query parameters and the requesting user&#x27;s role whenever the add-on is opened in an [iframe](https://developers.google.com/workspace/classroom/add-ons/get-started/iframes/iframes-overview). This method returns the following error codes: * `PERMISSION_DENIED` for access errors. * `INVALID_ARGUMENT` if the request is malformed. * `NOT_FOUND` if one of the identified resources does not exist.

Args:
  courseId: string, Required. Identifier of the course. (required)
  postId: string, Optional. Deprecated, use `item_id` instead. (required)
  addOnToken: string, Optional. Token that authorizes the request. The token is passed as a query parameter when the user is redirected from Classroom to the add-on&#x27;s URL. The authorization token is required when neither of the following is true: * The add-on has attachments on the post. * The developer project issuing the request is the same project that created the post.
  attachmentId: string, Optional. The identifier of the attachment. This field is required for all requests except when the user is in the [Attachment Discovery iframe](https://developers.google.com/workspace/classroom/add-ons/get-started/iframes/attachment-discovery-iframe).
  itemId: string, Identifier of the `Announcement`, `CourseWork`, or `CourseWorkMaterial` under which the attachment is attached. This field is required, but is not marked as such while we are migrating from post_id.
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # Attachment-relevant metadata for Classroom add-ons in the context of a specific post.
  &quot;courseId&quot;: &quot;A String&quot;, # Immutable. Identifier of the course.
  &quot;itemId&quot;: &quot;A String&quot;, # Immutable. Identifier of the `Announcement`, `CourseWork`, or `CourseWorkMaterial` under which the attachment is attached.
  &quot;postId&quot;: &quot;A String&quot;, # Immutable. Deprecated, use `item_id` instead.
  &quot;studentContext&quot;: { # Role-specific context if the requesting user is a student. # Add-on context corresponding to the requesting user&#x27;s role as a student. Its presence implies that the requesting user is a student in the course.
    &quot;submissionId&quot;: &quot;A String&quot;, # Requesting user&#x27;s submission id to be used for grade passback and to identify the student when showing student work to the teacher. This is set exactly when `supportsStudentWork` is `true`.
  },
  &quot;supportsStudentWork&quot;: True or False, # Optional. Whether the post allows the teacher to see student work and passback grades.
  &quot;teacherContext&quot;: { # Role-specific context if the requesting user is a teacher. # Add-on context corresponding to the requesting user&#x27;s role as a teacher. Its presence implies that the requesting user is a teacher in the course.
  },
}</pre>
</div>

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